2 files changed, 25 insertions, 0 deletions
diff --git a/src/util/Makefile.am b/src/util/Makefile.am
index 7025c2952..8c9ddb5bb 100644
--- a/src/util/Makefile.am
+++ b/src/util/Makefile.am
@@ -14,6 +14,7 @@ libutil_la_SOURCES = \
 	decision_engine.cpp \
 	decision_engine.h \
 	exception.h \
+	hash.h \
 	model.h \
 	options.h \
 	output.cpp \
diff --git a/src/util/hash.h b/src/util/hash.h
new file mode 100644
index 000000000..c72fe47e8
--- /dev/null
+++ b/src/util/hash.h
@@ -0,0 +1,24 @@
+/*
+ * hash.h
+ *
+ *  Created on: May 8, 2010
+ *      Author: chris
+ */
+
+#ifndef __CVC4__HASH_H_
+#define __CVC4__HASH_H_
+
+#include <ext/hash_map>
+namespace std { using namespace __gnu_cxx; }
+
+namespace CVC4 {
+
+struct StringHashFunction {
+  size_t operator()(const std::string& str) const {
+    return std::hash<const char*>()(str.c_str());
+  }
+};
+
+}
+
+#endif /* __CVC4__HASH_H_ */